Where should infants never ride in a vehicle with a passenger-side air bag?

Infants should never ride in the front seat of a vehicle equipped with a passenger-side airbag because of the potential for serious injury in the event of an accident. When an airbag deploys, it can forcefully inflate in a fraction of a second, and this rapid expansion can be extremely dangerous for a small child, particularly an infant who is rear-facing. The airbag's force can cause severe head and neck injuries to infants, whose bodies are still developing and are unable to withstand such a force. For their safety, it's recommended that infants and young children ride in an appropriate child safety seat located in the back seat, away from the risks posed by airbags.

Riding in the back seat is the safest option for young children for several reasons, including greater distance from potential impact zones in a crash and reduced risk of airbag-related injury. In contrast, riding on the roof or in the trunk would present obvious safety hazards and are not valid options for transporting passengers.